diff --git a/buffer/emul.py b/buffer/emul.py
index b28bb76..1a97aac 100644
--- a/buffer/emul.py
+++ b/buffer/emul.py
@@ -68,7 +68,10 @@ class XTermBuffer(Buffer, XTerm):
         self._term_insert(c)
     def term_handle_ctl(self, c):
         n = ord(c)
-        if n == 8:
+        if n == 7:
+            #bell
+            pass
+        elif n == 8:
             self.term_do_backspace()
         elif n == 9:
             self.term_do_tab()
@@ -81,7 +84,7 @@ class XTermBuffer(Buffer, XTerm):
         elif n == 127:
             self.term_do_delete()
         else:
-            self._term_insert('%x' % n)
+            self._term_insert('%03o' % n)
 
     def term_receive(self, s):
         for c in s: